[llvm] [X86][AVX-VNNI] Fix VNNI intrinsics argument types (PR #122649)

[via llvm-commits]

BaiXilin wrote:

This PR has been paused for too long, and as other reviewers pointed out, a lot of changes are missing/incorrect. I opened a new PR #155194 as a fresh start. Closing this one for now.

https://github.com/llvm/llvm-project/pull/122649